Routing machine



1944. A. E. BROCKLEBANK I 2,353,115

ROUTING MACHINE File-d p 1943 2 Sheets-Sheet 1 l I v z MIIIIJJLLLfl 10 nillllw ALFRED A. fieocmiaA/wr Arrow/v: Y3

N 4/ A. E. BROCKLEBANK Q ROUTING MACHINE Filed June 14, 1943 2 Sheets-Sheet 2 241/)?[0 BIPOGKLEBANK ZJ MMM wwafiw may be embodied.

Patented Nov. 21, 1944 ROUTING MAGHINE I Alfred E.Brocklebank,Cleveland, oh'imassi gnor y p p "to Thdwellman'lironze &AluminumCompany, "Cleveland, Ohio, acorporation of Ohio I Application June 1 4, 1943, Serial No. 490,586

1 Claim. (01. 90 16) The invention relates to routing machines, and I is particularly serviceable for small work.

The purposes of the invention are to provide a machine of the character noted which may be conveniently operated, is readily adjustable to a large number of relative positions of its several parts and of the machine and the work, and

which is unusually capable of rapid production in the field for which it is particularly adapted.

The annexed drawings and the following description set forth in detail certain means illustrating the improved routing machine, such means constituting, however, but one of the various forms in which the principle of the invention v In said annexed drawings: I

Figure 1 is a broken side view of the complete improved machine;

Figure 2 is a plan view, partly in section; Figure 3 is a vertical section, taken in the plane indicated by the line 33, Figure 2, the actuating,

motor being shown in elevation; I

Figure 4 is a vertical section, taken in the plane indicated by the line 4-- -4, Figure 3; and

Figure 5 is a plan section, taken in the planes indicated by the line 5-5, Figures 3 and 4.

Referring to the annexed drawings in which the same parts are indicated by thesame several numbers in the different'views, upon a base I is mounted a vertical standard 2 to which are vertically adjustably secured superimposed rtable bracket 3 andworking head 5, both laterally, ex-

tended from the standard 2, and the bracket 3 of which supports a workingsurface or table I. Vertically slidably mounted in the extended end of the head 5 is an upper reduced portion Ill of a vertical post ID to whose lower end is clamped one end of a motor bracket 6. In the other end of the bracket 6 is-clam ped a motor I to whose depending spindle 8 is secured the routing cutter 9 disposed'vertically above the work tabl 4,

An intermediate part of the reduced post portion I is tightly secured with a driving fit in a sleeve II whose upper end is vertically slidable on'the wall of a recess formed in the outer upper end of the head 5. The vertical adjustment of the'sleeve II relative to the working head 5 is eilectedb-y a vertical rack segment I2 formed on the outer side of the rear wall of the sleeve II which is engaged by a pinion I3 secured I extends beyond the journal on the end opposite the turning bar I5, to which extension is secured the inner end I6 of a spiral or torsion spring I6, The spiral spring I6 is contained withina recess II formed in an adjustable lock cap I8 and the other end I6 of the spring I6 is anchored to the periphery of the cap I8. This cap I8is formed with spaced inwardly extended tongues or teeth I8 alternating in staggered relation with opposed tongues I8? formed on and outwardly extended from the opposed surface of the head 5.

Thecap I8 is rotatably mounted on the reduced extension I4 of, the shaft portion I4 and the relatively staggered tongues I8 and I8 are normally held in engaged position by nuts I4 having screw threaded engagement withthe outer end of the shaft portion I4 The spring I6 is so mounted with relation to the shaft I4 and the cap I8 that the tension of the spring tends to rotate the shaft I4 and the pinion I3 in a direction to lift the sleeve II and associated parts such as post I0, motor bracket 6, motor I, etc., and the spring I6 thus serves as a means to counterbalance the weight of these parts. The tension exerted by the spring I6 can readily be adjusted by slackingofi on the nuts,

I43 suinciently to permit the tongues I8 'to be disengaged from the tongues I8 and by rotating the cap I8 in a direction to increase or decrease the tension on the spring I6, after which the tongues I8 I8 are re-engaged and the nuts I4 tightened. Thus the motor I and hence the routing cutter 9 can be quite accurately counterbalanced and hence vertically adjusted toward and from the work table I with a minimum of effort.

The sleeve I I is releasably clamped in the head 5. It will be noted in Figures 4 and 5 that the extended lower outer part of the head 5 is split into arcuate parts which engage the sleeve II and these parts are formed with opposed ears I9. Clamping bar 20 is; formed with a cylindrical shouldered portion and a terminal threaded portion, which portions respectively engage these ears I9'and the actuation of this clamping bar 20 resultsin a tightening or loosening of theears I9 relatively to each other and, hence, of the clamping pressure of the head 5 upon the sleeve II. The split parts of the head 5 are loosened by the turning of the bar 20 previously to the vertical adjustment of the sleeve II, and then after the desired vertical adjustment of the sleeve I I and, hence, of the cutter 9 is effected, the several parts are tightly clamped again through tion for the routing cutter 9 is suggested by the dot-and-dash showing thereof in Figure 1.

A vertical stop to limit th extent of downward travel of the cutter 9 is provided as between the head 5 and the motor bracket 6. This is particularly illustrated in Figure 4. For this purpose the motor bracket 6 is formed with a laterally extended ear 2| and the head 5 with a corresponding ear 22 in vertical alignment with the ear 2|, and these ears are engaged by a threaded adjusting bolt 26 screw threaded in the ear 21 The bolt 26 is pro- What I claim is: a

A routing machine having an upright standard, a work head and a table bracket vertically adjustably secured to the standard and transversely extended therefrom in superposed relation, a vertical 'post having a motor bracket secured adjacent its lower end, a sleeve slidably mounted in the work head and within which the post has tight fitting engagement, one side of said sleeve being formed with a vertical rack portion, a transverse shaft journalled in the work head and provided with a pinion having engagement with the rack, means for turning the shaft, a counterbalance tending to hold the post and motor bracket in upper position, and a motor mounted in the motor bracket and having a vertical cutter spindle extended toward the table bracket.

. ALFRED E. BROCKLEBANK. 

